Improvement in kilns for drying vegetables



2 Sheets-Sheet 2.

N. PETERS. PHOTO-LITHOGRPNER, WASHINGTON. D.

' cent lower ends.

arranged alternately down tothe lowest se.

UNTTED STATES PATENT Darien.

EDUARD HUNDHAUSEN, OF BUGKAU, NEAR MAGDEBURG, PRUSSIA.

IMPROVEMENT IN KILNS FOR DRYING VEGETABLES, 80C.

Specification forming part of Letters Patent No. 210,124, dated November 19,1878 application filed September 30, 1878.

To all whom it may concern.-

Be it known that I, EDUARD HUNDHAUsEN, of Buckau, near Magdeburg, Prussia, have invented a new and useful Improvement in Kilns wherein Chicory and other Vegetables are Dried, of which the following is a specilication:

The object of my invention is to so construct a kiln for drying beets and similar articles that the materials under treatment, in their passage through the kiln, will be uniformly and thoroughly dried 5 and this object I attain in the manner which I will proceed to describe, reference being had to the accompanying drawings, in which- Figure 1, Sheet 1, is a transverse vert-ical section of the kiln, and Fig. 2, Sheet 2, a lon gitudinal section.

The kiln, which is built of masonry or brickwork, is separated longitudinally into two dryingchambers by a central double wall, at one end of which is the chimney K. The top of each drying-chamber is inclosed by flooring B, through which pass feed-hoppers C, arranged in a central longitudinal row throughout the length of each chamber.

In the dryin g-cham-ber are arranged a number ot'inclined grated dryin g-plates, a bc d, supported in a series of stages by transverse beams k L. The upper ends of the top inclined plates or gratings, a a., meet in the center, immediately below the hoppers C, while spaces are left between their lower ends and the walls of the chamber. The upper ends of the neXtinclined gratings abut against the walls of the chamber, while a space is left between their adja- The drying-plates are thus ries, e, the surfaces of which communicate with discharge-openings L, provided with sliding doors g.

Each drying-chamber has a heating-furnace, D, which communicates, through the horizontal and vertical liuc-E, with the heat-distributer G, preferably arranged within the second series of gratings, d d. rlhis distributer G consists of a flat tube, of rectangular section, eX- tending throughout the length ot' the chamber, and having a longitudinal slot on its under side, so as to distribute the heat uniformlyr to all parts of the chamber,

I prefer to form the flue E of smaller section near the lire-place than in its vertical portion. Surrounding the horizontal and vertical portions of this iiue are air-conduits F, which discharge the heated air into the Hue and distributer G.

The upper part, H, of each chamber'com municates, through an opening, I, with the chimney for the exit of the heat and products of combustion.

The bars of the uppermost dryingplates are arranged at a sufficient dist-ance apart from each other to allow the smaller particles of the material to fall through onto the lower plates or gratings, and the bars of each successive set of plates are arranged gradually closer together until the lowermost plates, d and c, are reached, the bars of these plates being arranged sufciently close together to prevent the passage of particles of the usual size. By this arrangement the smaller chips, which are sooner dried than the larger ones, pass through the furnace more quickly, and thus particles of all sizes are dried uniformly. l

The hoppers O being iilled with the materials to be dried, the slides f are withdrawn and the material allowed to fall onto the drying plates or gratings, and the slides f are then closed to prevent the escape of heat. The materials under treatment pass over the successive series of gratings, the smaller particles lfallin g between the bars of the upper gratings,

and thus passing through the drying-chambers more quickly than the larger particles, as above described. The dried materials are withdrawn froml the kiln through the apertures L on opening the doors g. t

In orderto prevent an accumulation of ma terial on the gratings E between the dischargeopenings L, inclined plates h, as show n by dotted lines in Fig. 2, are arranged between'said openings. For the same purpose inclined roofplates lare placed onthe top ot' the lues E F and distributer G, Fig. 1.

In order to observe the operation of the kiln, windows i are built in the walls ofthe chambers.

, I' claim as my invention- 1. A drying-kiln having a series of'inclined and grated drying-plates, arranged substantially in the manner described.

2. A drying-kiln having @series of inclined In testimony whereof I have signed my and grated drying-plates, the spaces between naine to this specification in the presence of the bars of one series being` wider than the two subscribing witnesses. spaces between the bars of the series of plates EDUARD HUNDHAUSEN.

below, as set forth.

3. The combination of the kiln furnace, and

ue with the heatdistributer G, having a longi- Witnesses:

tudinal slot on its under side, as and for the BERTHOLD ROI, purpose set forth. EDWARD P. MACLEAN. 

